Crusher.



w.- H. LIEBER@ CRUSHER.

APPLICATloN-HLED FEB. 2o. 1911.

WITNEEEEE- iNvaN- r-DR- COLUMBIA PLANOGRAPH C0..W^SM|NBTDN. D. l:A

' a '0. .IL `n WILLIAM H. LIEBER, 0F MILWAUKEE, WISCONSIN, ASSIGNOR, BY MESNE .ASSIGN- MEN'IS, TO ALLIS-CHALMERS MANUFACTURING COMPANY, A CORPORATION 0F DELAWARE.

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Llfcg. Speccation of Letters Patent. y Patented Aug-o 39 31915 Application led February 20, 1911.

Be it known that I, WILLIAM H. Linsen, a itizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented a certain new and useful Improvement in Crushers, of which the following is a specification.

This invention `relates to improvements in the construction of Crushers for rock and similar substances.

The object of the invention is to provide av crusher in which a positively driven crusher head or member is caused to rotate at a high rate of speed within a concave disk or recessed member which is mounted on an aXis eccentric to the axis of the head, the crushing being effected by 'the direct ap preach of the surface toward each other, and the advance of the material toward the discharge end of the apparatus being effected by centrifugal force.

A clear conception of several embodiments of the invention can be had by referr-ing to the accompanying drawings in which like reference characters designate the same or similar parts in the various views.

Figure 1 is a central vertical sectionl through a vertically disposed crusher having the driving connection for the upper disk spanning the discharge opening of the crusher. Fig. 2 is a transverse horizontal section through the crusher, the section being taken along the line II-II ofFig. 1, looking in the direction of the arrows. Fig. 3 is a transverse vertical section through a modification, the crusher having the driving connection for the upper disk spanning the feed passage leading to the space between the crushing members. Fig.k 4 is a transverse horizontal section through the modified crusher, the section being taken along the line IV-IV of'Fig. 3, looking in the direction of the arrows.

The main crusher shaft 4, see Figs. 1 and 2, which in the disclosure is vertically disposed but which may be horizontal, has a conical crushing member or head 3 secured to its upper end by means of keys 7 or other suitable means. rThe vertical element or sleeve 8, which lis centrally secured to the crusherframe 10, has a through bore along which the outer cylindrical surface of the shaft 4 coacts. The driving pulley 11 is fixed to the lower end of the shaft 4 and is Serial N0. 609,648.

inclosed within the stationary lower frame 10 of lthe crusher. The outer surface of the sleeve 3 is turned eccentrically to the inner bore thereof.

The concave crushing member or disk 2, which is concave along its crushing surface, has an inlet opening 1 formed through the mid-portion thereof. rrrllhe periphery of the disk 2 has a series of laterally projecting ribs 6 between which discharge passages or openings 5 are formed, which ribs carry a fiat ring at their lower ends. lThis flat ring suspended from the disk 2, is of larger internal diameter than the external diameter of the head 3 and has screw threads 12 formed along its inner surface coacting therewith with an outwardly projecting iiange formed at the upper end of the supporting member or sleeve 9. The inner cylindrical surface of the sleeve 9 coacts with the outer turned surface of the stationary sleeve 8. This coaction of the inner surface of the sleeve 9 with the outer surface of the sleeve 8, provides an eccentric mounting of the crushing disk 2 relative `to that of the crushing head 3. It should also bev noted that the crushing head 3 coacts with its lower plane surface against the upper plane surface of the sleeve 9 and outwardly projecting flange of the sleeve. This construction provides a surface on the concave member which reacts directly against an integral portion of the convex crushing member. The supporting member or sleeve 9 is provided with a thrust bearing at its lower end upon the frame 10 whereby the entire weight ofthe crushing members is supported directly by the frame.

In the modification, see Figs. 3 and 4, the main shaft 19 which carries the crushing disk 15 at its upper end, coacts with the bore in the vertical sleeve 24. The sleeve 24 is formed in one with the stationary frame 25. The connection between the disk 15 and main shaft 19 is made by means of a series of ribs 16 which span the inlet passage or opening 14 to the crusher chamber. A collar 18 which is formed in one with the main shaftY 19, coacts with its lower surface against an upper surface of the sleeve 24, and with its upper surface against a lower surface of the crusher head 20. Alheicrusher head 2O has screw threads 22 which coact against screw threads at the ner bored and outer tunnedY surfaces of theV sleeve 24E being formed eccentric to-'each other. The discharge passage or opening 17, which is free from obstruction, is somewhat less in width on the right of the Crusher than on the left, due to the eccen*v tricity between the crushing members. The collar 18 has line coaction along its vertical cylindrical surface with the crushing head 20, a space 26 existing around the remaining portion of the cylindrical surface of the collar 18. The driving pulley 23 is secured in any suitable manner, not shown, to the sleeve 21 of the Crusher headV 20.

During the operation of the crusher, see Figs. 1 and 2, the raw material is fed through the inlet opening l into the space between the crusher head 3 and disk 2. The crusher head 3 is rapidly rotated by means of power applied to the driving pulley 11, causing the entering material to be forced 'toward the periphery of the head 3 and disk 2 by the action of centrifugal force thereon. On account of the eccentricity of the crushing members, it will be noted that the widthof the space between the head 3 and disk 2 at the right of the central crusher axis is considerably less than that at the left. The material being forced to-ward the periphery of the crushing elements is wedged between the convex surface of the Crusher` head 3 vand the concave surface of thedisk 2, causing these elements to rotate with each other. As the material which has entered the space between the crushing members at the pointof maximum distance between them is carried to the point of minimum distance between them, it is crushed by the direct approach of the two members toward each other. Upon receding from the point of minimum distance between the membersto the point of maximum distance, the material is forced by the centrifugal action to a point nearer the periphery of the crusher and is further crushed during the portion of the revolution of the members during which they approach .each other. This successive crushing and reducing of the `material is continued until the material is eventually crushed to such a degree of fineness that it will pass between the crushing head 3. andthe disk 1, when the crushed material is discharged through the openings o:

passages 5 formed betweenl the ribs 6.

During the operation of the modification, the material to be crushed is admitted to the space between the disk 15 and head 20 through the inlet passages or openings 14 formed between the ribs 16. The crushing head 20 is given a rapid rotation by means of any suitable power applied to the driving pulley 23. VAs the entering raw material ing thereon. The raw material is eventually lodged between the head 20 and disk 15,

' causing the disk 15 to rotate at substantially the same speed as that of the head 20. The eccentricity existing between they head 20 and disk 15 again produces a crushing action similar to that in the Crusher disclosed in Fig. 1. The material passing through the discharge passage or opening 17 of the modi` ed form of crusher does not meet any obstructions in its passage from the crusher. This feature results from placing the connecting ribs 16 near the center of the disk 15, rather than near its periphery.

Y It should be noted that the crushing reaction between the head 3 and disk 2 of the Crusher disclosed in Fig. 1, is taken up antifrictionally between the two crushing members along the horizontal plane of coaction between them, thus relieving the stationary members or frame from undue strains resulting from the crushing.

In the modicationdisclosed in Fig. 3, the crushing reaction is taken up along the plane of lcoaction of the crushing head 2O with the collar 18. It should also be noted that the constructions disclosed show the formation of elements with through bores as much as possible thereby giving a simple construction of the'elements.

1t should be understood that it is not desired to be limited to the exact details of constructions shown and described, for obvious modications will occur to a person skilled in the art.

1t is claimed and desired to secure byk Letters Patent,-

1. 1n combination, an element having eccentric bearing surfaces generated about vertical axes, and a crushing memberrotatable on each of said bearing surfaces, said element constituting the sole means for prefenting lateral displacement of said memers. f

2. In combination, a frame, an element having eccentric bearing surfaces generated about parallel axes, said element being symmetrically peripherally supported from said frame, and a crushing member rotatable on each of said bearing surfaces.

3. 1n combination, a stationary element having bearing surfaces generated about different axes, a supporting member rotatable on one of the bearingy surfaces, a crushing member rotatable on another of said bearing surfaces, and a second crushing member securedl to said supporting member and adjustably rotatable relatively thereto to vary the distance between said crushing members.

4. In combination, a supporting member, an exterior crushing member secured thereto, an interior crushing member having a supporting bearing upon said supporting member and having a crushing surface lying between said bearing and said exterior member, and an element having vertical eccentric bearing surfaces on which said interiory member and said supporting member are rotatable.

5. In combination, a rotatable supporting member having a bearing surface at right angles to its axis of rotation, a hollow conical crushing member secured to said supporting member, ing head supported upon said bearing surface and having a crushing surface between said surface and said hollow member, and an element having vertical eccentric bearing surfaces on which said supporting membery and said crushing head are rotatable.

6. In combination, two rotatable crushing members one internal ofthe other, an element having vertical parallel eccentric bearing surfaces engaging said members, a feed opening through the exterior member adj acent its axis, a discharge opening through the exterior member beyond the periphery of the interior member, and a supporting member secured to and adjustably rotatable relatively to one of said crushing members.

7. In combination, two rotatable crushing members one internal of the other, a frame having a central element secured thereto, 'eccentric bearing surfaces on said element positioning said crushing members, a supporting member attached to the exterior crushing member and having a re-action bearing against the interior member, and a thrusty bearing on said frame carryingsaid supporting member.

8. In combination, two rotatable crushing members having crushing surfaces one internal of the other and inclined outwardly from the axes of rotation of said members, a

a rotatable conical crushframe, a thrust bearing on said frame for carrying the weight of both crushing members, and an element having parallel eccentric bearing surfaces engaging correspondling bearing surfaces of said crushing memers.

9. In combination, two rotatable crushing members one internal of the other, a supporting member secured to the exterior crushing member and antifrictionally supporting the interior crushing member, a feedv opening adjacent the axis of said memf bers, and a discharge opening at the peripheries of said crushing members directed substantially in line with the crushing surfaces.

l0. In combination, a frame, an element secured to said frame and having parallel eccentric bearing surfaces, a crushing member coacting with each of said bearing surfaces, and a thrust bearing for supporting the weight of said members from said frame.

11. In combination, a frame, an eccentric projecting upwardly therefrom, and a plurality of rotatable crushing members having lateral bearings on said eccentric only.

12. In combination, a frame, an eccentric supported at one end from said frame, and a plurality of rotatable crushing members having lateral bearings on said eccentric onl lg. In combination, a frame, an eccentric peripherally supported from said frame, and a plurality of rotatable crushing members having lateral bearing on said eccentric only. In testimony whereof, I aix my signature in the presence of two witnesses.

WILLIAM I-I. LIEBER.

Witnesses:

CHAS. L. BYRON, ROB. E. S'ronr..

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C.

It is hereby certied that in Letters Patent N o. 1,149,146, granted August 3, 1915, upon the application of William H. Lieber, of Milwaukee, Wisconsin, for an improvement in Crushers, errors appear in the printed specification requiring correction as follows: Page 1, line 18, for the Word surface read surfaces; page 2, line 122, for the article the read said; and that the said Letters Patent should be readwith these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 7th Clay of September, A. D., 1915.

[SEAL] J. T. NEWTON,

Acting Commissioner of Patents, 

